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The fill valve (ball valve UK) is siezed or clogged.

As the water level rises, the float-ball rises and closes the valve when the water reaches the proper level.

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Q: What causes toilet tank to stop filling up with water?
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How a toilet 'knows' when to stop filling the tank?

Toilets use float valves. These are air filled balls that float on the water, as the cistern fills with water the ball floats higher. The ball is attached to an arm connected to a valve, when the ball reaches a predefined level the valve closes, shutting off the water to the cistern.


Why did Joseph Gayetty invent toilet paper?

To stop bacteria


How can you stop your toliet from filling up every 10 minutes?

Of course UNLESS you bought a model that is self flushing then NO... as it is the design to waste thousands of gallons of water a month


How do you stop loud rumbling after your toilet flushes?

u dont flush the tolet


Why would a toilet that has been working properly just stop flushing even though the tank and the bowl both fill up?

there can be many reasons and I will say my thoughts on just a few. 1. your toilet trap of the bowl is clogged with debris (toys, balls, etc) to fix = snake out toilet bowl or if necessary pull toilet bowl and snake backwards threw trap. 2. your tank flush flapper is closing to soon or your tank water level is not at right height to fix = change flapper or adjust water level height 3. your toilet arm before the vent is plugged because of back grade or debris clinging to the side of the drain pipe to test = pull toilet and run toilet water supply full on down threw toilet flange and see if any back flow. 4. your toilet main line is clogged from backgrade,roots,damaged pipe,etc but will let other fixtures slowly drain to test = camera toilet line from toilet flange out to street or septic or if no camera available then fill tub full and lav full and drain both at the same time and look at your lowest fixture trap to see if any back flow exists or open clean outs and if possible to see water flow .

Related questions

How do you stop the toilet tank from filling with water?

There should be shut off valve called an angle stop towards the floor on the left side of your toilet. If you shut this valve by turning it clockwise this will stop the feed of water to the tank of your toilet.A:Your float valve may be defective or worn out


Why does the toilet run every time a faucet is turned off or when the washer is done filling?

Pressure differences are causing the stop to bounce. This causes temporary water flow in the tank. A new float should take care of this issue.


Do frozen pipes stop a toilet cistern filling up?

it depends on how good the pluming is.


What causes toilets to whistle when flushed?

My experience is when you flush the toilet, the fill valve opens and starts re filling the tank......sometimes if the water pressure is too high, it will "whistle". Close your fill valve until it stops whistling.....usually this slight adjustment will stop it from making that annoying noise


How do you stop a toilet tank condensation?

Install a tempering valve in water line feeding toilet. Tempering valve will mix hot and cold water together so warm water fills toilet tank which will stop condensation.


How will you save the water?

Stop unnecessary flushes in the toilet. It definitely saves lot of water.


Where is the toilet washer?

seal to stop water from runing into tank located between tank and bowk


How a toilet 'knows' when to stop filling the tank?

Toilets use float valves. These are air filled balls that float on the water, as the cistern fills with water the ball floats higher. The ball is attached to an arm connected to a valve, when the ball reaches a predefined level the valve closes, shutting off the water to the cistern.


How do you fix water rising in toilet when flushed?

it's called stop holding down the flusher.


How do you stop water from running down bathroom walls?

By taking shorter showers and not flushing the toilet


What causes a bladder to stop working?

lack of water


How does one stop a toilet tank bolt leak?

You should get a plunger stick it in the toilet and hold it in there till the water slows down and if that doesnt work close the toilet seat and wait til you hear a dweeling sound that means the water is going down.